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Lego Gear STL Files for 3D Printing

This collection gathers STL files for Lego gears, including spur, bevel and worm types, racks and mixed sets. You can use it to find replacement parts or to study how different gear shapes work in a build. Check dimensions and axle fit before printing. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

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Regras de seleção: equipe editorial do Polyzon · Texto atualizado em 10/10/2026

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«Lego Gear STL Files for 3D Printing»

The collection covers several families: spur gears for direct meshing, bevel gears for angled shafts, worm gears for high reduction, gear racks for linear motion, and mixed sets that combine several sizes. Replacement versions follow common Lego dimensions, while display-oriented assemblies focus on shape rather than mechanical use. Differences show up in tooth profile, axle interface and the way parts connect to beams or pins.

When choosing a model, look at the listed tooth count, pitch, bore or axle hole, and overall diameter, because those determine whether two gears will mesh correctly. Check the author's notes on supports, orientation and material, and look at photos of real prints to judge surface quality and fit. For moving parts, leave clearance and test the assembly before committing to a larger build.

To refine the search, try related terms such as gear wheel, cog, pinion, rack and worm drive, or combine them with Technic, axle and replacement. Adding a specific function, like motor, steering or robot, narrows results to parts used in those builds. You can also search by tooth count or module if you already know the size you need.

FAQ

Perguntas frequentes

What is the difference between an original Lego gear and a replacement gear?
An original Lego gear comes from Lego, while a replacement gear is made to match its dimensions and axle interface. The fit can vary, so check the author's measurements and photos.
How do I know which gear will mesh with another?
Tooth count, pitch and tooth profile must match, and the centers of the axles need the correct distance. The model page usually lists these details or shows the gear next to a known part.
Can these gears be used in motorized builds?
Some are designed for Technic-style axles and can be used in motorized mechanisms. Check the axle hole, material and the author's notes on load and friction before using them under power.
What should I check before printing a gear?
Look at the scale, axle hole, tooth profile and whether the author recommends supports. Also review the material and settings listed on the model page.
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